Forced hot air furnace blowing cold air

If your furnace is blowing cold air, we empathize with you. The same is true for your ductwork.

You have a furnace blowing cold air, which means you are losing money and everyone is bundled up and shivering inside. Sound familiar? A broken furnace is a stressful situation that can make everyone's life difficult. You need to call a furnace repair before it gets worse or before this leads to your furnace not turning on at all. In the meantime, you know that this will happen again next year unless something is done! And if you have a heat pump blowing cold air or room temperature air, our blog about the function of auxiliary heat could be a huge hand to you!

Forced hot air furnace blowing cold air

If your furnace is blowing cold air in your home, this is a sign of an issue with the flame detector, gas supply, air filter, pilot light, or condensate lines. Many of these issues are able to be easily solved on your own by sanitizing or replacing components in the gas furnace. If your furnace is blowing cold air, it may be a good idea to check the pilot light on your gas system to ensure it is working. The pilot light in your gas furnace is designed to ignite the burners to ensure your system is able to develop heat. It is common to have issues with the pilot light on older gas furnaces. We recommend following the instruction kit that came with your furnace to re-light the pilot. The reset toggle is usually located near the bottom of the furnace. Please refer to your instruction kit if you are having issues finding the pilot light assembly and reset switch. After the reset toggle has been located, move it to the off position to deactivate the gas. We recommend waiting a couple of minutes before setting the reset switch to the On position to allow excess gas to exit from the chamber in your furnace. Next, adjust the reset toggle to the Pilot setting to ensure gas is able to be transmitted to the pilot light.

Here are some things you can do before calling in a professional: The circuit breaker or fuse box. Sometimes the limit switch will get stuck in the open position, which will require a service call from a contractor to replace the part.

Your furnace is blowing cold air. You wait, but the temperature in the house drops. What could have gone wrong? Some solutions are easy fixes. Some require an HVAC contractor with a good tool kit. So why is your furnace blowing cold air? When a gas furnace first starts, it goes through a warm-up cycle.

Chances are, if the temperature has unexpectedly plummeted inside your home, you may have an issue with your furnace. Before you figure out the problem, it helps to learn a little about how your home heating system might work. The furnace produces heat by burning natural gas or heating oil. When the thermostat is turned on, a pilot light or electronic igniter lights the fuel in a combustion chamber, which begins to warm the heat exchanger, located just above the combustion chamber. A blower fan directs air across the heat exchanger, and when the temperature reaches a certain point, the fan comes on and blows the heated air out into the heating ducts and into the interior of the house. Cooler air cycles back through return ducts into the furnace, and the process starts all over. Walk through the steps below to help you determine why your furnace is blowing cold air. And then if you do need to call in a pro, check out this guide on furnaces that will give you a good overview of how much repairs or a new furnace will cost. Give the furnace a few minutes for the heat to circulate. Another thing to try: If you have an older thermostat, remove the cover and blow or brush off any dust that may have accumulated inside its interior.

Forced hot air furnace blowing cold air

Lost password? Recover password. Remembered your password? Back to login. A furnace blowing cold air indicates that something is amiss. The furnace might have overheated, or there could be an issue with the thermostat, air filter, pilot light, flame sensor, ducts, condensate line, or gas supply. Furnaces are designed to heat homes. If your furnace is not producing warm air, something is wrong. Fortunately, furnaces are relatively uncomplicated appliances. With some basic knowledge of how furnaces work and an understanding of the issues that cause furnaces to blow cold air, you can resolve the problem yourself.

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Locate the pilot light assembly. But if the filter remains clogged, the problem will recur and the furnace will not provide the proper amount of heat. A Short Guide to Anode…. However, if you live with other people, you may want to keep an eye on who is pushing the thermostat buttons. Yeah, we realize the first issue seems rather silly, but you might be amazed how many people leave their thermostat set to COOL in the early fall and just forget about their HEAT button altogether. Have you noticed your furnace is not working in your home? Next, check all of your vents and registers. Water Heaters. How does A Furnace Work? Ways to Clear Your Outdoor….

If your furnace blows cold air sometimes, you most likely have dirty air filters or blocked air vents. However, it could also be something as minor as the wrong thermostat setting or as complex as electrical circuity failure. Nevertheless, you need to act quickly.

One of the furnace's components or processes might have malfunctioned or failed. If your furnace is not producing warm air, something is wrong. Maintenance Plans. This can contribute to cooled air in vents and inevitably cause cool air to pass through your heating system. The thermocouple is a sensor that controls the gas valve and the ignition. Usually, it will try to cycle again. The thermostat sends signals to your furnace to turn on and off. Besides obstructions, the condensate overflow may be due to a malfunctioning condensate pump. If your heater is blowing cold air, this may indicate a severe issue with the gas supply line in your home. How to Find the Right…. Three Things You Can Do…. The remedy might be as simple as flipping a switch or swapping out a filter. Another setting may be the cause. Ways to Clear Your Outdoor…. Does a Whole House Fan….